Gina Neff, professor of technology and society at University of Oxford, tweeted the day after the ruling: "Right now, and I mean this instant, delete every digital trace of any menstrual tracking."

Her message has so far received more than 200,000 likes and been retweeted 54,000 times.

Period trackers are used to help women predict when their next period is likely to be, and are often used to either try to prevent pregnancy or to try to conceive.

There are fears that the apps could be used to punish those seeking a termination, if law enforcement got hold of the data.

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A security vulnerability in the fitness app Strava allowed suspicious figures to identify and track security personnel working at secretive bases in Israel, a disinformation watchdog says.

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It is an offence to install monitoring apps without a user's permission.

Where parents are the owners of the device this would not apply.

This guide to parental control apps explores the possible positives and negatives of using them, plus provides an overview of some of the most popular apps on offer.

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Amazon's home robot collects an enormous amount of personal data, rolling deeper into your house than the e-commerce giant's Ring cameras or Alexa voice assistants.

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A ‘finsta’ (a slang term that combines ‘fake’ and ‘Insta’, a popular shortened title for ‘Instagram’) may be the new choice of account for younger generations.

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This is a tragedy and an interesting resource on the price and value of privacy.

'Over time, Justin's obsession with the girl became worrying. She learned that her hometown friends in Naples, Florida, were selling the man photos of her and other information, including her cellphone number.

Justin began calling and texting her, and even agreed to do one of her classmate's math homework in exchange for information about Ms Majury.'

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